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From 8410dde8d9593c1d96593b17d610d7daf955dab3 Mon Sep 17 00:00:00 2001
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From: Michal Sekletar <msekletar@users.noreply.github.com>
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Date: Fri, 8 Sep 2017 15:41:44 +0200
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Subject: [PATCH] manager: when reexecuting try to connect to bus only when
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dbus.service is around (#6773)
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Trying to connect otherwise is pointless, because if socket isn't around
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we won't connect. However, when dbus.socket is present we attempt to
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connect. That attempt can't succeed because we are then supposed
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to activate dbus.service as a response to connection from
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us. This results in deadlock.
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Fixes #6303
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(cherry picked from commit 5463fa0a88f95d2002858592578f9bf4e0d2660a)
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Resolves: #1465737
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---
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src/core/manager.c | 9 ++++++---
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1 file changed, 6 insertions(+), 3 deletions(-)
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diff --git a/src/core/manager.c b/src/core/manager.c
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index 287cf6a74..041fac46b 100644
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--- a/src/core/manager.c
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+++ b/src/core/manager.c
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@@ -799,16 +799,19 @@ static int manager_setup_kdbus(Manager *m) {
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static int manager_connect_bus(Manager *m, bool reexecuting) {
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bool try_bus_connect;
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+ Unit *u = NULL;
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assert(m);
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if (m->test_run)
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return 0;
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+ u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
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+
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try_bus_connect =
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- m->kdbus_fd >= 0 ||
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- reexecuting ||
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- (m->running_as == SYSTEMD_USER && getenv("DBUS_SESSION_BUS_ADDRESS"));
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+ (u && UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) &&
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+ (reexecuting ||
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+ (m->running_as == SYSTEMD_USER && getenv("DBUS_SESSION_BUS_ADDRESS")));
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/* Try to connect to the busses, if possible. */
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return bus_init(m, try_bus_connect);
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